<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=2">
<meta name="theme-color" content="#222">
<meta name="generator" content="Hexo 4.2.0">
  <link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png">
  <link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png">
  <link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png">
  <link rel="mask-icon" href="/images/logo.svg" color="#222">

<link rel="stylesheet" href="/css/main.css">


<link rel="stylesheet" href="/lib/font-awesome/css/all.min.css">

<script id="hexo-configurations">
    var NexT = window.NexT || {};
    var CONFIG = {"hostname":"yoursite.com","root":"/","scheme":"Muse","version":"7.8.0","exturl":false,"sidebar":{"position":"left","display":"post","padding":18,"offset":12,"onmobile":false},"copycode":{"enable":false,"show_result":false,"style":null},"back2top":{"enable":true,"sidebar":false,"scrollpercent":false},"bookmark":{"enable":false,"color":"#222","save":"auto"},"fancybox":false,"mediumzoom":false,"lazyload":false,"pangu":false,"comments":{"style":"tabs","active":null,"storage":true,"lazyload":false,"nav":null},"algolia":{"hits":{"per_page":10},"labels":{"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}},"localsearch":{"enable":false,"trigger":"auto","top_n_per_article":1,"unescape":false,"preload":false},"motion":{"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}}};
  </script>

  <meta name="description" content="js产生指定范围的随机整数搞了一个抽奖小活动，可惜没有适合自己的抽奖工具，干脆自己写一个网页版的吧，js+html，简单，兼容手机，自适应屏幕。      抽奖  var a &#x3D; 1 ; function myFunction(){         var text &#x3D; document.createTextNode(&quot;第&quot;+a+&quot;次结果&quot;);     var container &#x3D; docume">
<meta property="og:type" content="article">
<meta property="og:title" content="js产生指定范围的随机整数">
<meta property="og:url" content="http://yoursite.com/2020/05/21/js%E4%BA%A7%E7%94%9F%E6%8C%87%E5%AE%9A%E8%8C%83%E5%9B%B4%E7%9A%84%E9%9A%8F%E6%9C%BA%E6%95%B4%E6%95%B0/index.html">
<meta property="og:site_name" content="编程学习笔记">
<meta property="og:description" content="js产生指定范围的随机整数搞了一个抽奖小活动，可惜没有适合自己的抽奖工具，干脆自己写一个网页版的吧，js+html，简单，兼容手机，自适应屏幕。      抽奖  var a &#x3D; 1 ; function myFunction(){         var text &#x3D; document.createTextNode(&quot;第&quot;+a+&quot;次结果&quot;);     var container &#x3D; docume">
<meta property="og:locale" content="zh_CN">
<meta property="article:published_time" content="2020-05-21T07:26:19.874Z">
<meta property="article:modified_time" content="2020-05-26T09:32:44.882Z">
<meta property="article:author" content="szj">
<meta name="twitter:card" content="summary">

<link rel="canonical" href="http://yoursite.com/2020/05/21/js%E4%BA%A7%E7%94%9F%E6%8C%87%E5%AE%9A%E8%8C%83%E5%9B%B4%E7%9A%84%E9%9A%8F%E6%9C%BA%E6%95%B4%E6%95%B0/">


<script id="page-configurations">
  // https://hexo.io/docs/variables.html
  CONFIG.page = {
    sidebar: "",
    isHome : false,
    isPost : true,
    lang   : 'zh-CN'
  };
</script>

  <title>js产生指定范围的随机整数 | 编程学习笔记</title>
  






  <noscript>
  <style>
  .use-motion .brand,
  .use-motion .menu-item,
  .sidebar-inner,
  .use-motion .post-block,
  .use-motion .pagination,
  .use-motion .comments,
  .use-motion .post-header,
  .use-motion .post-body,
  .use-motion .collection-header { opacity: initial; }

  .use-motion .site-title,
  .use-motion .site-subtitle {
    opacity: initial;
    top: initial;
  }

  .use-motion .logo-line-before i { left: initial; }
  .use-motion .logo-line-after i { right: initial; }
  </style>
</noscript>

</head>

<body itemscope itemtype="http://schema.org/WebPage">
  <div class="container use-motion">
    <div class="headband"></div>

    <header class="header" itemscope itemtype="http://schema.org/WPHeader">
      <div class="header-inner"><div class="site-brand-container">
  <div class="site-nav-toggle">
    <div class="toggle" aria-label="切换导航栏">
      <span class="toggle-line toggle-line-first"></span>
      <span class="toggle-line toggle-line-middle"></span>
      <span class="toggle-line toggle-line-last"></span>
    </div>
  </div>

  <div class="site-meta">

    <a href="/" class="brand" rel="start">
      <span class="logo-line-before"><i></i></span>
      <h1 class="site-title">编程学习笔记</h1>
      <span class="logo-line-after"><i></i></span>
    </a>
  </div>

  <div class="site-nav-right">
    <div class="toggle popup-trigger">
    </div>
  </div>
</div>




<nav class="site-nav">
  <ul id="menu" class="main-menu menu">
        <li class="menu-item menu-item-home">

    <a href="/" rel="section"><i class="fa fa-home fa-fw"></i>首页</a>

  </li>
        <li class="menu-item menu-item-archives">

    <a href="/archives/" rel="section"><i class="fa fa-archive fa-fw"></i>归档</a>

  </li>
  </ul>
</nav>




</div>
    </header>

    
  <div class="back-to-top">
    <i class="fa fa-arrow-up"></i>
    <span>0%</span>
  </div>


    <main class="main">
      <div class="main-inner">
        <div class="content-wrap">
          

          <div class="content post posts-expand">
            

    
  
  
  <article itemscope itemtype="http://schema.org/Article" class="post-block" lang="zh-CN">
    <link itemprop="mainEntityOfPage" href="http://yoursite.com/2020/05/21/js%E4%BA%A7%E7%94%9F%E6%8C%87%E5%AE%9A%E8%8C%83%E5%9B%B4%E7%9A%84%E9%9A%8F%E6%9C%BA%E6%95%B4%E6%95%B0/">

    <span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
      <meta itemprop="image" content="/images/avatar.gif">
      <meta itemprop="name" content="szj">
      <meta itemprop="description" content="">
    </span>

    <span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
      <meta itemprop="name" content="编程学习笔记">
    </span>
      <header class="post-header">
        <h1 class="post-title" itemprop="name headline">
          js产生指定范围的随机整数
        </h1>

        <div class="post-meta">
            <span class="post-meta-item">
              <span class="post-meta-item-icon">
                <i class="far fa-calendar"></i>
              </span>
              <span class="post-meta-item-text">发表于</span>

              <time title="创建时间：2020-05-21 15:26:19" itemprop="dateCreated datePublished" datetime="2020-05-21T15:26:19+08:00">2020-05-21</time>
            </span>
              <span class="post-meta-item">
                <span class="post-meta-item-icon">
                  <i class="far fa-calendar-check"></i>
                </span>
                <span class="post-meta-item-text">更新于</span>
                <time title="修改时间：2020-05-26 17:32:44" itemprop="dateModified" datetime="2020-05-26T17:32:44+08:00">2020-05-26</time>
              </span>

          

        </div>
      </header>

    
    
    
    <div class="post-body" itemprop="articleBody">

      
        <h1 id="js产生指定范围的随机整数"><a href="#js产生指定范围的随机整数" class="headerlink" title="js产生指定范围的随机整数"></a>js产生指定范围的随机整数</h1><p>搞了一个抽奖小活动，可惜没有适合自己的抽奖工具，干脆自己写一个网页版的吧，js+html，简单，兼容手机，自适应屏幕。</p>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>抽奖</title>
<script>
var a = 1 ;
function myFunction(){    
    var text = document.createTextNode("第"+a+"次结果");
    var container = document.getElementById("container");
    var p = document.createElement("p");//创建一个标签
    p.appendChild(text);//在标签内添加文字
    p.setAttribute('id',a);
    container.appendChild(p);//将标签添加到页面中    
    a+=1;    
}
function getValu(){
    m = parseInt(document.getElementById("minNum").value)
    n = parseInt(document.getElementById("maxNum").value)    
}
var i = 1;
function myFunction1(){    
    document.getElementById(i).innerHTML=Math.floor(Math.random()*(n-m+1)+m);//生成在[m,n]中的随机数
    i+=1;
}
</script>
</head>
<body>
<h3 align="center">抽奖</h3>
<div align="center" >
抽奖范围：从<input type="text" id="minNum" size="5"/>
到<input type="text" id="maxNum"/ size="5">
<button align="center" onclick="getValu()">确定</button>
</div>
<div align="center">
<button align="center" onclick="myFunction()">生成序号</button>
<button align="center" onclick="myFunction1()">开始抽奖</button>
</div>
<div align="center" id="container"></div>
</body>
</html>

<a id="more"></a>

<figure class="highlight js"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line">&lt;!DOCTYPE html&gt;</span><br><span class="line">&lt;html&gt;</span><br><span class="line">&lt;head&gt;</span><br><span class="line">&lt;meta charset=<span class="string">"utf-8"</span>&gt;</span><br><span class="line">&lt;meta name=<span class="string">"viewport"</span> content=<span class="string">"width=device-width, initial-scale=1"</span> /&gt;<span class="comment">//适应手机屏幕</span></span><br><span class="line">&lt;title&gt;抽奖&lt;<span class="regexp">/title&gt;</span></span><br><span class="line"><span class="regexp">&lt;script&gt;</span></span><br><span class="line"><span class="regexp">var a = 1 ;</span></span><br><span class="line"><span class="regexp">function myFunction()&#123;	</span></span><br><span class="line"><span class="regexp">	var text = document.createTextNode("第"+a+"次结果");</span></span><br><span class="line"><span class="regexp">    var container = document.getElementById("container");</span></span><br><span class="line"><span class="regexp">    var p = document.createElement("p");/</span><span class="regexp">/创建一个标签</span></span><br><span class="line"><span class="regexp">    p.appendChild(text);/</span><span class="regexp">/在标签内添加文字</span></span><br><span class="line"><span class="regexp">	p.setAttribute('id',a);</span></span><br><span class="line"><span class="regexp">	container.appendChild(p);/</span><span class="regexp">/将标签添加到页面中	</span></span><br><span class="line"><span class="regexp">	a+=1;	</span></span><br><span class="line"><span class="regexp">&#125;</span></span><br><span class="line"><span class="regexp">function getValu()&#123;</span></span><br><span class="line"><span class="regexp">	m = parseInt(document.getElementById("minNum").value)</span></span><br><span class="line"><span class="regexp">	n = parseInt(document.getElementById("maxNum").value)	</span></span><br><span class="line"><span class="regexp">&#125;</span></span><br><span class="line"><span class="regexp">var i = 1;</span></span><br><span class="line"><span class="regexp">function myFunction1()&#123;	</span></span><br><span class="line"><span class="regexp">	document.getElementById(i).innerHTML=Math.floor(Math.random()*(n-m+1)+m);/</span><span class="regexp">/生成在[m,n]中的随机数</span></span><br><span class="line"><span class="regexp">	i+=1;</span></span><br><span class="line"><span class="regexp">&#125;</span></span><br><span class="line"><span class="regexp">&lt;/</span>script&gt;</span><br><span class="line">&lt;<span class="regexp">/head&gt;</span></span><br><span class="line"><span class="regexp">&lt;body&gt;</span></span><br><span class="line"><span class="regexp">&lt;h3 align="center"&gt;抽奖&lt;/</span>h3&gt;</span><br><span class="line">&lt;div align=<span class="string">"center"</span> &gt;</span><br><span class="line">抽奖范围：从&lt;input type=<span class="string">"text"</span> id=<span class="string">"minNum"</span> size=<span class="string">"5"</span>/&gt;</span><br><span class="line">到&lt;input type=<span class="string">"text"</span> id=<span class="string">"maxNum"</span>/ size=<span class="string">"5"</span>&gt;</span><br><span class="line">&lt;button align=<span class="string">"center"</span> onclick=<span class="string">"getValu()"</span>&gt;确定&lt;<span class="regexp">/button&gt;</span></span><br><span class="line"><span class="regexp">&lt;/</span>div&gt;</span><br><span class="line">&lt;div align=<span class="string">"center"</span>&gt;</span><br><span class="line">&lt;button align=<span class="string">"center"</span> onclick=<span class="string">"myFunction()"</span>&gt;生成序号&lt;<span class="regexp">/button&gt;</span></span><br><span class="line"><span class="regexp">&lt;button align="center" onclick="myFunction1()"&gt;开始抽奖&lt;/</span>button&gt;</span><br><span class="line">&lt;<span class="regexp">/div&gt;</span></span><br><span class="line"><span class="regexp">&lt;div align="center" id="container"&gt;&lt;/</span>div&gt;</span><br><span class="line">&lt;<span class="regexp">/body&gt;</span></span><br><span class="line"><span class="regexp">&lt;/</span>html&gt;</span><br></pre></td></tr></table></figure>
    </div>

    
    
    

      <footer class="post-footer">

        


        
    <div class="post-nav">
      <div class="post-nav-item">
    <a href="/2020/05/14/hexo%E5%8D%9A%E5%AE%A2%E6%8F%92%E5%85%A5%E5%9B%BE%E7%89%87/" rel="prev" title="hexo博客插入图片">
      <i class="fa fa-chevron-left"></i> hexo博客插入图片
    </a></div>
      <div class="post-nav-item">
    <a href="/2020/05/26/%E7%94%A8python%E7%88%AC%E5%8F%96%E5%B9%B6%E7%BB%9F%E8%AE%A1%E7%99%BE%E5%BA%A6%E8%B4%B4%E5%90%A7%E5%9B%9E%E5%B8%96%E6%95%B0%E6%8D%AE/" rel="next" title="用python爬取并统计百度贴吧回帖数据">
      用python爬取并统计百度贴吧回帖数据 <i class="fa fa-chevron-right"></i>
    </a></div>
    </div>
      </footer>
    
  </article>
  
  
  



          </div>
          

<script>
  window.addEventListener('tabs:register', () => {
    let { activeClass } = CONFIG.comments;
    if (CONFIG.comments.storage) {
      activeClass = localStorage.getItem('comments_active') || activeClass;
    }
    if (activeClass) {
      let activeTab = document.querySelector(`a[href="#comment-${activeClass}"]`);
      if (activeTab) {
        activeTab.click();
      }
    }
  });
  if (CONFIG.comments.storage) {
    window.addEventListener('tabs:click', event => {
      if (!event.target.matches('.tabs-comment .tab-content .tab-pane')) return;
      let commentClass = event.target.classList[1];
      localStorage.setItem('comments_active', commentClass);
    });
  }
</script>

        </div>
          
  
  <div class="toggle sidebar-toggle">
    <span class="toggle-line toggle-line-first"></span>
    <span class="toggle-line toggle-line-middle"></span>
    <span class="toggle-line toggle-line-last"></span>
  </div>

  <aside class="sidebar">
    <div class="sidebar-inner">

      <ul class="sidebar-nav motion-element">
        <li class="sidebar-nav-toc">
          文章目录
        </li>
        <li class="sidebar-nav-overview">
          站点概览
        </li>
      </ul>

      <!--noindex-->
      <div class="post-toc-wrap sidebar-panel">
          <div class="post-toc motion-element"><ol class="nav"><li class="nav-item nav-level-1"><a class="nav-link" href="#js产生指定范围的随机整数"><span class="nav-number">1.</span> <span class="nav-text">js产生指定范围的随机整数</span></a><ol class="nav-child"><li class="nav-item nav-level-3"><a class="nav-link" href="#"><span class="nav-number">1.0.1.</span> <span class="nav-text">抽奖</span></a></li></ol></li></ol></li></ol></div>
      </div>
      <!--/noindex-->

      <div class="site-overview-wrap sidebar-panel">
        <div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
  <p class="site-author-name" itemprop="name">szj</p>
  <div class="site-description" itemprop="description"></div>
</div>
<div class="site-state-wrap motion-element">
  <nav class="site-state">
      <div class="site-state-item site-state-posts">
          <a href="/archives/">
        
          <span class="site-state-item-count">18</span>
          <span class="site-state-item-name">日志</span>
        </a>
      </div>
  </nav>
</div>



      </div>

    </div>
  </aside>
  <div id="sidebar-dimmer"></div>


      </div>
    </main>

    <footer class="footer">
      <div class="footer-inner">
        

        

<div class="copyright">
  
  &copy; 
  <span itemprop="copyrightYear">2020</span>
  <span class="with-love">
    <i class="fa fa-heart"></i>
  </span>
  <span class="author" itemprop="copyrightHolder">szj</span>
</div>
  <div class="powered-by">由 <a href="https://hexo.io/" class="theme-link" rel="noopener" target="_blank">Hexo</a> & <a href="https://muse.theme-next.org/" class="theme-link" rel="noopener" target="_blank">NexT.Muse</a> 强力驱动
  </div>

        








      </div>
    </footer>
  </div>

  
  <script src="/lib/anime.min.js"></script>
  <script src="/lib/velocity/velocity.min.js"></script>
  <script src="/lib/velocity/velocity.ui.min.js"></script>

<script src="/js/utils.js"></script>

<script src="/js/motion.js"></script>


<script src="/js/schemes/muse.js"></script>


<script src="/js/next-boot.js"></script>




  















  

  

</body>
</html>
